Simple CT Circuit 15% over reading

[Bill.Thomson]

@phoenix

(e.g. ESP-32)?

That one is in one of the forum posts:

Use the ACS712 to monitor my house energy use?

Dears, Thanks for Your help! I am now having a bit more time so I can come back to this topic. Let me summarize my issues a little: I’m using ESP32 which has a pretty crappy ADC (non linear, poor reading etc.) → therefore I decided to “upgrade” it with the ADS1115 From the Arduino serial plotter I am now getting a relatively good looking sign-wave for the current. This was not possible using the ESP32’s internal ADC’s. So, current setup is: ESP32 + ZMPT101B + ADS1115 (to be honest I don’t ful…